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Chapter 8 Vocabulary
Chapter 8 Vocabulary
22
Science
11th Grade
02/05/2020

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Term
accommodation
Definition
Adaptation in response to differences or changing needs; adjustment of the eye for seeing objects at close range.
Term
chemoreceptor
Definition
Receptors sensitive to various chemicals in solution.
Term
color blindness
Definition
A sex-linked condition resulting in the lack of one or up to three different cone types. It occurs almost exclusively in males.
Term
cones
Definition
One of two types of photoreceptor cells in the retina of the eye. Provides for color vision.
Term
convergence
Definition
Turning towards a common point from different directions.
Term
dynamic equilibrium
Definition
Sense that reports on angular or rotatory movements of the head in space.
Term
emmetropia
Definition
The eye that focuses images correctly on the retina. "Harmonious vision."
Term
gustatory cells
Definition
Specific epithelial cells that respond to chemicals dissolved in the saliva.
Term
hair cells
Definition
Specialized cells located within the organ of Corti responsible for detecting the sense of hearing.
Term
hyperopia
Definition
Farsightedness.
Term
mechanoreceptors
Definition
Receptors sensitive to mechanical pressures such as touch, sound, or contractions.
Term
myopia
Definition
Nearsightedness.
Term
olfactory receptors
Definition
Receptors occupying a postage stamp-sized area in the roof of each nasal cavity with the ability to sense smell.
Term
organ of Corti
Definition
The organ containing hearing receptors, located within the cochlear duct.
Term
presbyopia
Definition
The decrease in lens elasticity that accompanies aging.
Term
presbycusis
Definition
A gradual deterioration and atrophy of the organ of Corti leads to the loss of the ability to hear high tones and speech sounds.
Term
pupillary reflex
Definition
The condition where the pupils immediately constrict when exposed to bright light or when viewing close objects.
Term
refraction
Definition
The bending of light as light passes from one substance to another.
Term
retina
Definition
Light sensitive layer of the eye; contains rods and cones.
Term
rods
Definition
One of the two types of photosensitive cells in the retina.
Term
static equilibrium
Definition
Balance concerned with changes in the position of the head.
Term
taste buds
Definition
Receptors for taste on the tongue. roof of mouth, pharynx, and larynx.
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